UMass Amherst KIN 470 - Kin 470 lab 4 notes from video (3 pages)

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Kin 470 lab 4 notes from video



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Kin 470 lab 4 notes from video

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Pages:
3
School:
University of Massachusetts Amherst
Course:
Kin 470 - Exercise Physiology
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Kin 470 lab 4 notes from video Blood pressure and acute response Blood pressure Goes up an down depending on ventricular contraction Every time you contact it goes up then slowly decline o Goes up systolic Typical is 120 o Rest diastolic o Pressure is in mmHg Calculation in lab o Pulse pressure Subtract diastolic from systolic bp 120 80 40 o mean arterial pressure PP 3 diastolic at rest PP 2 DBP exercise BP measurement o Blood pressure cuff o Increase cuff pressure up to above systolic blood pressure 160 mmHg o No blood flowing through o Release valve o Systolic pressure Equal to cuff pressure o 1st korotkoff sound around 120 mmHg o continue to hear sounds until 2nd Korotkoff sound 120 80 blood pressure greatly passes cuff pressure can freely flow through beats you hear during systole blood gets through diastole nothing gets through should sound like an echo end of diastole won t hear any of the sounds orthostatic hypotension o drop in blood pressure when going from lying down to standing up o blood pooling when u are lying down o quickly standing up not a lot of blood near heart o less pressure inside o blood pressure will drop o quickly goes away in a few seconds o some people black out when standing up quickly BP and exercise o SBP is expected to increase linearly with work rate 10 15 mmHg for each 50W increase in cycle power o DBP changes very little o Returns to the pre exercise level within 5 8 minutes after the cessation of moderate exercise o BP returns to normal within a few minutes depends on intensity More intense will take longer BP and the cold pressor test o In cold environments BP increases Increase in norepinephrine Venoconstriction o To stimulate a cold environment the Cold Pressor Test is used Submerge hand in ice water for 2 minutes Measure blood pressure after the 2 minutes Lab activity o Create groups of 4 pick 2 participants o Use the BioPac system Open L16 blood pressure lab o Make sure you calibrate the system correctly Will save time and effort Protocol o Participant 1 2 seated o Participant 2 2 seated o Participant 1 2 supine o Break analyze current data make sure it looks normal o Participant 2 supine Next o Particpant 1 cold pressor test 3 measurements 0 5 10 o participant 2 exercise and CPT 2 measurements after 5 mins of cycling then 2 minutes of CPT o short lab report results and discussion notes from lab o sitting lying down exercise hand in bucket of ice o lying down sitting blood will pool cardiac output will decrease o hand in ice increase in bp vasoconstriction where hand is cold and higher o exercise systolic increases increased cardiac output SV increased Time in systole decreased Decrease harder and faster o Exercise with hand in cold blood pressure increase


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